# National Association of REALTORS

**Canonical:** https://apis.io/providers/nar/  
**Website:** https://www.nar.realtor/  
**APIs profiled:** 1

The National Association of REALTORS (NAR) is the largest trade association in the United States, representing roughly one million members across residential and commercial real estate. NAR is the industry body that sits above the roughly 500 local Multiple Listing Services, and it is the reason the US residential market has a machine-readable contract at all: MLS Policy Statement 7.90 requires MLS organizations owned and operated by associations of REALTORS to implement the RESO Data Dictionary and the RESO Web API and to stay current within one year of each ratification, with compliance demonstrated through the RESO Certification Process. NAR mandates that standard rather than operating it - RESO is a separate organization, and the listing data behind every certified endpoint is licensed through MLS membership, an IDX or VOW agreement, a broker relationship, or a reseller. NAR itself holds no RESO certification and publishes no self-serve developer portal. Its own API surface is REALTORS M1, the members-first engagement system that replaces NRDS: the M1 Gateway External API is a live, HTTP-Basic-authenticated REST API over member, office, association and data-extract records, whose Swagger 2.0 definition and Postman collection NAR publishes openly on GitHub for external association management system vendors and NAR partners, but whose credentials NAR issues only under a partner relationship.

## Kin Score — 31.7 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 31.7).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 35.0 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 30.4 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 33.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (1)

- **REALTORS M1 Gateway External API** — The external surface of NAR's REALTORS M1 Gateway - the members-first engagement system that is the single source of truth for REALTOR member data across state and local associa...

## MCP servers (1)

- **National Association of REALTORS MCP Server**

## Agentic access (1)

- **Nar Agentic Access** — 88 operations · 59 acting

## Security (2)

- **Nar Authentication** — http · 1 scheme
- **Nar Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Real-Estate, United States, Industry Body, MLS, RESO, Standards, Membership, Property Listings, IDX, PropTech

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/nar/). Scores are computed from the provider's own public artifacts under a published rubric.